ankylosis
American Heritage Dictionary:
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an·ky·lo·sis
also an·chy·lo·sis (ăng'kə-lō'sĭs) 
n.
n.
- Anatomy. The consolidation of bones or their parts to form a single unit.
- Pathology. The stiffening and immobility of a joint as the result of disease, trauma, surgery, or abnormal bone fusion.
[New Latin, from Greek ankulōsis, stiffening of the joints, from ankuloun, to crook, bend, from ankulos, crooked, bent.]
ankylotic an'ky·lot'ic (-lŏt'ĭk) adj.
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Loss of movement in a joint, usually from arthritis, but also from sports injuries, such as fractures that involve joint surfaces. During healing of the fracture, the moving parts may fuse with the broken parts. Prolonged immobility may also cause ankylosis.
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anchylosis
IN BRIEF: n. - Abnormal adhesion and rigidity of the bones of a joint.
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Saunders Veterinary Dictionary:
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ankylosis
Abnormal immobility and consolidation of a joint.
Ankylosis may be caused by destruction of the membranes that line the joint or by faulty bone structure. It is most often a result of chronic arthritis, in which the affected joint tends to assume the least painful position and may become more or less permanently fixed in it.
Artificial ankylosis (arthrodesis), locking of a joint by surgical operation, is sometimes done in treatment of a severe joint condition.
- bony a. — union of the bones of a joint by proliferation of bone cells, resulting in complete immobility.
- extracapsular a. — that caused by rigidity of surrounding parts.
- false a., fibrous a. — reduced joint mobility due to proliferation of fibrous tissue.
- inherited multiple a. — calves are affected at birth and cause fetal dystocia. The legs are bent and fixed in flexion, and there is some deformity of the spine. In one breed of cattle there is a combination of ankylosis and cleft palate.
- intracapsular a. — that caused by rigidity of structures within the joint.
- spontaneous a. — occurs in the intertarsal and tarsometatarsal joints of horses. Called also bone spavin.
- spurious a. — extracapsular ankylosis.
- stapedial a. — fixation of the footplate of the stapes in otosclerosis, causing a conductive hearing loss.
- surgical a. — performed to immobilize a painful joint or to correct excessive mobility, e.g. carpal ankylosis carried out on large birds as a deflighting procedure.
- true a. — bony ankylosis.
Mosby's Dental Dictionary:
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ankylosis
(ang′kilō′sis)
n
n
An abnormal fixation and immobility of a joint.
Random House Word Menu:
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categories related to 'ankylosis'
- Signs and Symptoms - ankylosis: fusion of bones across joint
Wikipedia on Answers.com:
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Ankylosis
| Ankylosis | |
|---|---|
| Classification and external resources | |
| ICD-10 | M24.6 |
| ICD-9 | 718.5 |
| DiseasesDB | 29910 |
| MeSH | D000844 |
Ankylosis or anchylosis (from Greek ἀγκύλος, bent, crooked) is a stiffness of a joint due to abnormal adhesion and rigidity of the bones of the joint, which may be the result of injury or disease. The rigidity may be complete or partial and may be due to inflammation of the tendinous or muscular structures outside the joint or of the tissues of the joint itself. Noma—a gangrenous disease still widespread among malnourished children living on the borders of the Sahara desert—can cause ankylosis of the maxilla and mandible, impairing the ability to speak and eat.[1]
When the structures outside the joint are affected, the term "false" ankylosis has been used in contradistinction to "true" ankylosis, in which the disease is within the joint. When inflammation has caused the joint-ends of the bones to be fused together the ankylosis is termed osseous or complete. Excision of a completely ankylosed shoulder or elbow may restore free mobility and usefulness to the limb. "Ankylosis" is also used as an anatomical term, bones being said to ankylose (or anchylose) when, from being originally distinct, they coalesce, or become so joined together that no motion can take place between them.
Fossil record
Main article: Paleopathology
Evidence for ankylosis found in the fossil record is studied by paleopathologists, specialists in ancient disease and injury. Ankylosis has been reported in dinosaur fossils from several species, including Allosaurus fragilis, Becklespinax altispinax, Poekilopleuron bucklandii, and Tyrannosaurus rex (including the Stan specimen).[2]
See also
References
- ^ Deeb, G. R.; Yih, W. Y.; Merrill, R. G. & Lundeen, R. C. (1999), "Noma: report of a case resulting in bony ankylosis of the maxilla and mandible", Dentomaxillofacial Radiology 28 (6): 378–382.
- ^ Molnar, R. E., 2001, Theropod paleopathology: a literature survey: In: Mesozoic Vertebrate Life, edited by Tanke, D. H., and Carpenter, K., Indiana University Press, p. 337-363.
This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press.
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Translations:
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Ankylosis
Dansk (Danish)
n. - ankylose, sammenvoksning
Nederlands (Dutch)
gewrichts- verstijving
Français (French)
n. - ankylose
Deutsch (German)
n. - Gelenkversteifung
Ελληνική (Greek)
n. - (ιατρ., μτφ.) αγκύλωση
Português (Portuguese)
n. - ancilose (f) (Med.)
Español (Spanish)
n. - anquilosis, endurecimiento articular
Svenska (Swedish)
n. - ankylos
中文（简体）(Chinese (Simplified))
骨骼坚固或粘合, 关节僵硬
中文（繁體）(Chinese (Traditional))
n. - 骨骼堅固或粘合, 關節僵硬
العربيه (Arabic)
(الاسم) تصلب المفصل ا التصاقه
עברית (Hebrew)
n. - איחוי בין עצמות, קישיון המיפרק, קשחת
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American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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Oxford Dictionary of Sports Science & Medicine
The Oxford Dictionary of Sports Science & Medicine. Copyright © Michael Kent 1998, 2006, 2007. All rights reserved.
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Saunders Veterinary Dictionary
Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.
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Mosby's Dental Dictionary
Mosby's Dental Dictionary. Copyright © 2004 by Elsevier, Inc. All rights reserved.
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This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article Ankylosis.
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